fix(dashboard): rename TUI chrome host to ~/as

[duyet]

The terminal chrome now identifies as ~/as instead of ~/agentstate.

What changed

• Shared TUI_HOST ("as") in packages/dashboard/src/lib/site.ts
• Marketing header + footer, landing $ prompts, dashboard sidebar, and breadcrumb all render ~/as
• Unit test locks the host so it does not drift back to ~/agentstate / ~/fleet

Light/dark behavior is unchanged. [theme] still toggles.

  

Summary by Sourcery

Standardize terminal UI branding on the ~/as host across the dashboard and marketing experience.

Bug Fixes:

• Rename the terminal UI chrome host from ~/agentstate and ~/fleet to ~/as across marketing and dashboard surfaces.

Enhancements:

• Centralize the TUI host value in a shared constant for consistent rendering.

Documentation:

• Document ~/as as the shared dashboard and marketing terminal chrome host.

Tests:

• Add coverage ensuring the shared TUI host is used and legacy host names do not reappear.

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Reviewer's Guide

Renames the shared terminal UI chrome host to a centralized TUI_HOST constant ("as") and updates dashboard/marketing chrome and tests/documentation to ensure all prompts render as ~/as instead of ~/agentstate or ~/fleet.

File-Level Changes

Change	Details	Files
Centralize the TUI chrome host as a shared constant and use it across dashboard and marketing chrome.	Add TUI_HOST export set to "as" in the shared site configuration module. Update dashboard app shell sidebar labels to render ~/ followed by TUI_HOST instead of a hard-coded host string. Update breadcrumb prompt to use ~/{TUI_HOST} instead of a fixed ~/agentstate. Update marketing layout header and footer prompts to use TUI_HOST for the host segment. Update landing page README-style prompts to use ~/{TUI_HOST} instead of ~/fleet.	packages/dashboard/src/lib/site.ts packages/dashboard/src/components/app-shell.tsx packages/dashboard/src/layouts/MarketingLayout.astro packages/dashboard/src/pages/index.astro
Lock the TUI chrome host behavior via tests and documentation to prevent regression to old hosts.	Extend the terminal TUI stack test to assert TUI_HOST is exported as "as" and that key chrome files reference TUI_HOST instead of hard-coded hosts. Update core-memory documentation to note that the shared TUI chrome host is ~/as and is configured via TUI_HOST in the site module.	packages/dashboard/src/lib/preset-stack.test.ts docs/knowledge/core-memory.md

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Run ID: 2c61669b-dd9e-4a95-b761-ca0b3b61d899

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